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Nuclear Engineering Commons

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Articles 1 - 8 of 8

Full-Text Articles in Nuclear Engineering

An Overview Of Pebble-Bed Reactors, Paul Schwan, Julian Spangler, Isaac Naupa Nov 2018

An Overview Of Pebble-Bed Reactors, Paul Schwan, Julian Spangler, Isaac Naupa

Georgia Undergraduate Research Conference (GURC)

Pebble bed reactors (PBR) are a type of Generation IV nuclear reactor that offers remarkable advantages over traditional reactors in size, safety, and cost of construction. This makes PBRs a very attractive alternative to the more complex reactor designs currently operating while also offering a possible solution to increasing energy demands. There are currently a number of national and international companies in the nuclear industry working on the development and testing of PBRs. Even though several of the PBR designs are new, some designs resemble the original designs with modern technologies and materials. In this research study, a historical approach ...


Mcnp Modeling Of A Molten Salt Reactor, David Wall Nov 2018

Mcnp Modeling Of A Molten Salt Reactor, David Wall

Georgia Undergraduate Research Conference (GURC)

GURC Conference – Deadline: 9/21/2018

MCNP Modeling of a Molten Salt Reactor

David Wall and Chris Berry

Mentors:

Dr. Andrew Hummel

Dr. Tien Mun Yee

Dr. Jungkyu Park

Dr. Eduardo B. Farfán

Draft: 9/21/2018

A variety of national and international companies are looking into innovative and nontraditional nuclear reactor systems, known as Generation IV reactors. Recently, there has been an increased interest in a reactor type that uses molten salts of various compositions as nuclear fuel because of its economic and technological advantages. This research study is an exploratory exercise of the nuclear attributes of molten salt ...


Numerical Modeling Of Fluid Flow In A Molten Salt Reactor, Alisa Machiwalla, Carnell Tate Nov 2018

Numerical Modeling Of Fluid Flow In A Molten Salt Reactor, Alisa Machiwalla, Carnell Tate

Georgia Undergraduate Research Conference (GURC)

Numerical Modeling of Fluid Flow in a Molten Salt Reactor

Molten Salt Reactors (MSRs) are a generation IV reactors that have been selected by the World Nuclear Association for its potential in the advancement of reactor sustainability, economics, safety, reliability, and proliferation-resistance. MSRs were originally designed in the 60s by Oak Ridge National Laboratory and have recently gained popularity. Literature shows differing mixed composition of uranium and fluoride salts being utilized in the reactor core. Depending on the mixed composition, each mix has different effects on the core overall temperature distribution. Temperature distribution within the reactor is important due to ...


An Overview Of Molten Salt Reactors – History, Design, And Future Prospects, Duncan Bohannon, Chase Casher Nov 2018

An Overview Of Molten Salt Reactors – History, Design, And Future Prospects, Duncan Bohannon, Chase Casher

Georgia Undergraduate Research Conference (GURC)

In the nuclear industry, there are several startup companies simulating, developing and testing new nuclear reactor designs. One of the many reactors being designed is the Molten Salt Reactor (MSR). MSRs were conceptualized and popularized by Oak Ridge National Laboratory in the 1960s. With the recent resurgence in interest regarding this type of reactor because of the economic and technical advantages, this research project aims to provide a historical context for their development, specific design specifications, and reactor core design modifications over time. In addition, this study focuses on various types of nuclear fuel, reactor geometries, potential moderator materials, and ...


27 - Monte Carlo Simulation Of A Geiger Counter, Gamma-Ray Sources And Shielding, Luke Appling, Mayur Menon, David Wall Nov 2018

27 - Monte Carlo Simulation Of A Geiger Counter, Gamma-Ray Sources And Shielding, Luke Appling, Mayur Menon, David Wall

Georgia Undergraduate Research Conference (GURC)

Geiger counters are extensively utilized for measuring ionization radiation from alpha-particle, beta-particle, and gamma-ray sources. Geiger counters are used for radiation monitoring and field characterization in areas such as radiological protection, experimental physics, and nuclear industry. In this study, Monte Carlo simulations of a Geiger counter were completed using a Monte Carlo N-Particle Transport Code (MCNP). The purpose of this study was to expand the Geiger counter model to include gamma-ray shielding. To verify the code effectiveness, different simulations have been conducted using a variety of radiation sources (e.g., Cs-137 and Co-60) and materials including iron, lead, and concrete ...


10 - Dimensioning And Modeling Of A Molten Salt Reactor, Theron Crockett Nov 2018

10 - Dimensioning And Modeling Of A Molten Salt Reactor, Theron Crockett

Georgia Undergraduate Research Conference (GURC)

This will be a poster reviewing the scope of this project including all visuals and information found or created.


Thermal Transport Study On Actinide Oxides Using Phonon Density Of States Calculation, Alex Resnick, Katherine Mitchell Nov 2018

Thermal Transport Study On Actinide Oxides Using Phonon Density Of States Calculation, Alex Resnick, Katherine Mitchell

Georgia Undergraduate Research Conference (GURC)

The thermophysical properties of nuclear fuels being developed in generation IV nuclear reactors are still being widely examined since the reactor’s operating performance is strongly correlated to the thermal transport properties of the fuel source. In this research, phonon density of states (DOS) are estimated for uranium dioxide (UO2), thorium dioxide (ThO2), and plutonium dioxide (PuO2) as these are all significant representations of the actinide oxide family. The crystalline structures of these fuels are altered to contain point defects in the form of primary atom vacancies, oxygen vacancies, and uranium substitution. Primary atom and oxygen vacancies ...


Heat Transfer Comparison Of Varied Pebble Sizes And Packing Arrangements In A Pebble-Bed Reactor, Julian Spangler Nov 2018

Heat Transfer Comparison Of Varied Pebble Sizes And Packing Arrangements In A Pebble-Bed Reactor, Julian Spangler

Georgia Undergraduate Research Conference (GURC)

Pebble bed reactors are more cost efficient when heat transfer is optimized. In a pebble-bed reactor, optimizing heat transfer involves the analysis of complex flow. Therefore, computational fluid dynamics was used to simulate fluid movement in a structured cubic packing arrangement with a purpose in finding an optimal size of pebbles that will yield the fastest rate of heat transfer. The simple cubic pebble arrangement was used to determine if pebble size was key to optimizing heat transfer in the reactor. More complex arrangements of pebbles were used as comparison to the simple cubic packing in order to determine if ...